Mila Kunis chatted with a gal pal after Pilates on Tuesday afternoon, and we can't believe how big the pregnant starlet's belly is getting! We also can't believe Ashton Kutcher is just a few weeks away from being a dad for the first time. Well, that we know of...

Mila has stayed mum on her due date, but she's reportedly set to give birth within the next month. This spring she said she wanted to deliver her baby naturally, but it seems as though she may have changed her mind.

"Mila wants the world to think she's calm and collected, but in reality, she's freaking out," a source tells OK! Magazine. "She's starting to really panic as the due date gets closer. She's second-guessing all her decisions and is panicking about the pain. She's been reading things online about natural births, and they're scaring her even more. She's beyond fearful."

Hmm, sounds like a slight exaggeration, but still. We'd probably be freaking out too!